Unexplosive preparation.



OFFICE.

ALBRECHT'SCHMIDT, OF HfiCHST-ON-THE-ILAIN, GERMANY, ASSIGNOR TOFARBWERKE VORM. MEISTER LUCIUS & BBIINING, OF HfiCHST-ON-THE-MAIN,GERMANY, A COR- PORATION OF GERMANY.

UNEXPLOSIVE PREPARATION.

1,136,723, Specification of Letters Patent.

No Drawing. I

To all whom it may concern Be it known that I, ALBRECHT SCHMIDT, Ph.D.,chemist, a citizen of the Empire of Germany, residing atHochst-on-the-Main, Germany, have invented certain new and usefulImprovements in Unexplosive Preparations,'of which the following is aspecification.

It is known that nitro compounds, for instance salts of dinitro-andpolynitro-phenols, such as sodium-dinitro-cresolate,sodium-dinitro-phenolate or the like, are used for several purposes,serving also as mycocide substances. The use 2'. e. the handling ofthese products in the trade, above all for over-sea-transport, appearsto involve some danger inasmuch as the pastes therefrom, when dry, leavebehind certain bodies which are of an exceedingly explosive action. Thusit is a well-known fact that salts of dinitrophenols, for instance,1.2.4-sodiumdinitro-phenolate, also sodium-dinitro-cresolate and thetrinitro compounds, are very explosive, so that it is dangerous to storeand move the highly concentrated pastes of these salts in places whichare not fire-proof, because when a fire breaks out said pastes dry upvery quickly and then explode.

Now I have found that the explosiveness of such bodies can be subdued ina most simple and inexpensive way by mixing these bodies with theconstituentsof waste liquors from sulfite-cellulose or with the latteritself (both to be comprised under the term waste liquors fromsulfite-cellulose B constituents of waste liquors from su fite-celluloseare to be understood salts of ligninic acids or lignino-sulfonates orthe like. In this way, that is to say by evaporating such pastes, it ispossible to obtain'unexplosive solid products. Thus for instance a pasteis produced, which is capable of being transported and which, even whenartificially and completely dried up, is no longer explosive, by mixingsodium-dinitro-phenolate or the sodium-dinitro-phenolate containingcommon salt (as obtainable by treating dinitrochlorobenzene with causticsodalye) with about the same or one and a half times the quantity orless of waste-liquor.

from sulfite-cellulose of about 80 per cent. (that is, containing about20 per cent. of Water), with or without the addition of a Patented Apr.20, 1915.

Application filed September 29, 1913. Serial No. 792,465.

further quantity of caustic soda-lye, sodium carbonate or the like. Byallowing the pastes thus obtained to dry at a moderately hightemperature, for instance in 'vacuo, solid products are obtained, which,even when suddenly heated, do not explode but only glow faintly. Incases where it is not inten ed to suppress entirely the explosiveness ofnitro-bodies but only to diminish it, considerably less of theligninosulfonate is added.

The waste-liquor from sulfite-cellulose possesses, probably owing to itscaking and sticky condition, the property of lessening the mobility ofthe individual particles of the respective explosive body, andconsequentl the transmissibility of the ignition of sue a particle toanother one.

Thepastes thus obtained for instance from the salts of dinit-rophenolsare also distinguished by their ready solubility, furthermore they dry uvery slowly, a property which is also 0 great importance for the sale ofthe product in cheap packages. Finally the pastes are entirely stable,the ligninosulfonates having proved to be indif ferent towardnitro-bodies at ordinary temperature or at a slightly-raisedtemperature.

The above described process can be applied to all nitro-bodies, amongwhich are itillio introduced nitrosulfonic acids or the Having nowdescribed my inventio, what I claim is:

1. As new products, the preparations, obtained by incorporatingwaste-liquors from sulfite-cellulose into nitro compounds, showing onthe one hand the reactions of the waste-liquors from sulfite-cellulose,on the other hand, those of the nitro compounds.

2. As a new product, the preparation, obtained by incorporating thewaste-liquors from sulfite-cellulose into the alkali salt of thedinitrophenol, showing on the one hand the reactions of thewaste-liquors from sulfite-cellulose, on the other hand, those of thedinitrophenol.

In testimon whereof I affix my signature in presence 0 two witnesses.

ALBRECHT SCHMIDT.

Witnesses:

JEAN GRUND, CARL GRUND.

